这家咖啡馆对所有艺术家实行开放政策。

This café has an ___open-door policy for all artists.

这个城市实行开放政策，欢迎来自世界各地的移民。

The city has an ___open-door policy for immigrants from all over the world.

我们学校实行开放政策，欢迎家长随时来访。

Our school maintains an ___open-door policy, welcoming parents to visit anytime.